[EricEdwardSelvaraj]

(Original post by Oromis263)
67+ out of 70 on all 4 thus far, not fully marked the rest. Did them under timed conditions, but may have got distracted by House Still managing to finish them in the 1 hour 15 minutes that were allotted for those papers, but still, I don't want to let it be that tight in the real exam!

Hang on, I am sure F&PP is 2 hrs and RFCU is 1 1/4 hrs? Am I wrong?

[littlemissmidget123]

(Original post by hughh20)
You should totally PM them to us.

I'm scared for this exam, revision is helping though! Gone from an E to C/B by just practicing exams.

nah im keeping these for myself..im very worried about the exams.. i need 174 or so out of 270 for the 2 a2 modules (retaking jan one) to get a b.. i think its doable... when i work my butt off!

[Oromis263]

(Original post by EricEdwardSelvaraj)
Hang on, I am sure F&PP is 2 hrs and RFCU is 1 1/4 hrs? Am I wrong?

You would be correct, I am talking about papers from the previous specification, which were equally weighted and timed (at least, the sections I have got were).

[Miller693]

I have a feeling this will be my worst exam, but hopefully should be pushing for that A*, need to start memorising all the standard answers for magnetic flux-y things.

[Contrad!ction.]

(Original post by Miller693)
I have a feeling this will be my worst exam, but hopefully should be pushing for that A*, need to start memorising all the standard answers for magnetic flux-y things.

I'm devoting today for that, hopefully.

Instead of revising for tomorrow's C1 exam

[hughh20]

(Original post by Contrad!ction.)
I'm devoting today for that, hopefully.

Instead of revising for tomorrow's C1 exam

That sounds like a perfect plan, today is devoted to the Rise and Fall paper for me, and the dentist.

[Contrad!ction.]

(Original post by hughh20)
That sounds like a perfect plan, today is devoted to the Rise and Fall paper for me, and the dentist.

Ended up doing FP3, oops. Still, about to get some help from a teacher once his meeting's finished, hopefully that'll sort out magnetism.

[Miller693]

Now FP2 is done, I think my attention moves onto this exam. Anyone fancy sharing some pre release questions? I have some as well, which I'll be willing to put up of course.

[Oromis263]

(Original post by Miller693)
Now FP2 is done, I think my attention moves onto this exam. Anyone fancy sharing some pre release questions? I have some as well, which I'll be willing to put up of course.

Haha, I feel the same! :P Have you got the ones off of the Matthew Moodle site? If it asks you to login, just hit login as guest.

[doubled99]

I've been trying to get my head around the John Milne design...can someone explain why the 'garden gate' is tilted off the ground, why not just leave it flat? Thanks

[Dhanu123]

has anyone got their hands on the g495 jan 2012 paper? could you guys post a link if you have? much appreciated

[conorordan]

I've uploaded all my notes for this topic and some Section C material my teacher gave us.

[Oromis263]

(Original post by conorordan)
I've uploaded all my notes for this topic and some Section C material my teacher gave us.

Have you got a similar set for G494? Just interested to compare them to mine and make sure I've not missed anything obvious. Thanks for these!

[Oromis263]

Ok, well I reckon we should start testing each other on our written answers, as usually they're the easiest to lose marks on! Have these few questions to get us started:

1. Explain why a hydrogen atom cannot take all of the energy from an electron that has 12.0eV of energy (given that the hydrogen is in its ground state when the electron collides with it).

2. Explain how a rotating magnet causes an emf in a coil of a simple AC generator.

3. Given
i) Explain why one of the particles X or Y could be an electron.
ii) If X is an electron, suggest why Y could be an antineutrino

Just some to get us started.

[Amy-Rose]

Hows everyone doing on past papers and stuff? I'm just getting As on them, but not very comfortably. Not sure what I can do to improve at the moment!

Any weak areas?

[Revent]

So going to fail this exam Really need to get an A in it

[PhysicsGirl]

Anyone found any particularly interesting / challenging past paper questions that they think would be worth taking a particular look at?

[Oromis263]

(Original post by PhysicsGirl)
Anyone found any particularly interesting / challenging past paper questions that they think would be worth taking a particular look at?

I have a few more, nobody answered my first set. These aren't challenging, just quite nice ones for putting together good word structure and practise being coherent. :P

1. Explain why the intensity of gamma photons decreases with increasing distance from the source (the source being a radioactive sample).

2. In an experiment, protons and antiprotons travel in opposite directions through an evacuated tube which has a uniform magnetic flux density.

i) Suggest why protons and antiprotons travel in opposite directions in the evacuated tube.

Sometimes when a proton and antiproton collide, a particle called the Z is created. The Z particle is unstable and decays quickly into a positron and an electron.

ii) Suggest the equation for the decay of the Z particle, showing nucleon and charge numbers.

iii) The experiment shows that the Z particle has a rest energy of 93 GeV. Suggest how this is determined by experiment.

3. Explain why the core of a pulse counter is made from thin iron sheets glued together rather than being solid iron.

4. The nucleons in a nucleus are bound to each other by the strong force. Explain why this requires the mass of the nucleus to be less than the mass of its separate nucleons.

[Revent]

(Original post by Oromis263)
I have a few more, nobody answered my first set. These aren't challenging, just quite nice ones for putting together good word structure and practise being coherent. :P

1. Explain why the intensity of gamma photons decreases with increasing distance from the source (the source being a radioactive sample).

2. In an experiment, protons and antiprotons travel in opposite directions through an evacuated tube which has a uniform magnetic flux density.

i) Suggest why protons and antiprotons travel in opposite directions in the evacuated tube.

Sometimes when a proton and antiproton collide, a particle called the Z is created. The Z particle is unstable and decays quickly into a positron and an electron.

ii) Suggest the equation for the decay of the Z particle, showing nucleon and charge numbers.

iii) The experiment shows that the Z particle has a rest energy of 93 GeV. Suggest how this is determined by experiment.

3. Explain why the core of a pulse counter is made from thin iron sheets glued together rather than being solid iron.

4. The nucleons in a nucleus are bound to each other by the strong force. Explain why this requires the mass of the nucleus to be less than the mass of its separate nucleons.

How would you word the answer to question 4?

[Oromis263]

Have a go first, and quote this one back.

(Original post by Revent)
How would you word the answer to question 4?